The Hi.E Sun Lens
Quality Sutro Hi.Efficiency sun lenses are made from the only material that is truly optically pure and free of haze — optical mineral glass. Even with all the advancements in plastics and polymers, glass remains the most effective material for precision optics.
Clarity Our lenses start in the USA as pure glass wafers from Corning. They are sent to Italy and diamond cut and polished to perfect optical clarity. Polarizing filters are applied using a proprietary robotic process to insure perfect alignment and consistency in every lens, while blocking 99.9% of reflected glare. An Anti-Reflective (AR) coating is applied to the inside of each lens to prevent rear and side light intrusion from reflecting into your eye.
Durability Glass is a permanent material, that doesn't lose its shape or color. Plastic lenses often fade and warp in the frame causing distortion and eye fatigue. Sutro Hi.E lenses are twice as scratch resistant as plastic or CR39 lenses for a longer life span and each lens is chemically tempered and tested for impact resistance before it leaves the factory.